#include <stdio.h>
#include <math.h>
int main()
{
	float m = 0.049;
	float a = 0;
	int n = 0;
	scanf("%f %d", &a, &n);
	n = n * 12;
	float b = (a * m * pow(1+m, n)) / pow(1+m, n-1);
	printf("%f", b);
	return 0;
} 
